In my music library, I use the SETSUBTITLE field for track section titles. There’s currently nowhere for this data to be stored in or retrieved from MusicBrainz in a machine-readable (automatic) way, which is why MBS-6680 has so many votes.
- Recordings are shared across different releases, and the disambiguation is supposed to identify differences between recordings, so it’s not going to end up being the same as the track section title.
- Works are shared across different games as well.
The best you can do is write the track ranges inside the release annotation. That happens to be the same thing VGMdb is currently doing in their release notes, as they do not have track section titles either. (Technically, they don’t even have disc titles - instead, they have medium catalog numbers.)